WO2024016950A1 - 风扇框结构、交换机及通信设备 - Google Patents

风扇框结构、交换机及通信设备 Download PDF

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Publication number
WO2024016950A1
WO2024016950A1 PCT/CN2023/102501 CN2023102501W WO2024016950A1 WO 2024016950 A1 WO2024016950 A1 WO 2024016950A1 CN 2023102501 W CN2023102501 W CN 2023102501W WO 2024016950 A1 WO2024016950 A1 WO 2024016950A1
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WO
WIPO (PCT)
Prior art keywords
fan
frame
backflow prevention
backflow
baffle
Prior art date
Application number
PCT/CN2023/102501
Other languages
English (en)
French (fr)
Inventor
陈耿
Original Assignee
锐捷网络股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 锐捷网络股份有限公司 filed Critical 锐捷网络股份有限公司
Publication of WO2024016950A1 publication Critical patent/WO2024016950A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
    • H05K7/20136—Forced ventilation, e.g. by fans

Definitions

  • the present application relates to the field of heat dissipation technology for electronic equipment, and in particular, to a fan frame structure, a switch and a communication device.
  • Communication equipment usually includes multiple chassis. Each chassis is equipped with various communication components such as optical modules, switching chips, and CPUs. These communication components will generate heat during their work. In order to ensure the normal operation of each component in the chassis, these components must be dissipated in time. Heat dissipation capacity is one of the main factors affecting network reliability. Insufficient heat dissipation capacity may lead to high latency of communication equipment, network disconnection, and even equipment abnormalities. At present, most equipment mainly relies on exhaust fans for heat dissipation, and multiple sets of fans are configured to enhance heat dissipation capabilities.
  • Multiple sets of fans are powered by power modules in the chassis through the motherboard.
  • airflow will be generated, and the airflow will directly enter the area of the communication components close to the fan, and flow in the gaps between the communication components to form an air duct.
  • the heat generated by the communication components is taken away by the air flow in the air duct. Since the fan is close to the communication component and the airflow directly enters the communication component area corresponding to the fan position, each group of fans is mainly used to dissipate heat for the communication component corresponding to its position. In this design, since the fan is close to the communication components, the air inlet area of the fan is small, which affects the heat dissipation performance of the fan.
  • An embodiment of the present application provides a fan frame structure, including: a first frame, the first frame is provided with a fan installation space suitable for accommodating a fan; and an anti-backflow sheet frame, the anti-backflow sheet frame is provided on the third A position on the frame corresponding to the fan.
  • the backflow prevention plate frame includes an anti-backflow baffle rotatably disposed on the backflow prevention plate frame, the backflow prevention baffle including: a rotation shaft extending in a substantially vertical direction; and a baffle plate part, the baffle part can pivot around the rotation axis, and the backflow prevention baffle has a first limit position when it is opened, wherein when the backflow prevention baffle is in the first limit position, the backflow prevention baffle is in the first limit position.
  • the range of the angle between the extension plane where the baffle part is located and the extension plane where the backflow prevention sheet frame is located is less than 90 degrees; and the backflow prevention baffle also has a second limit position when closed, and the backflow prevention sheet frame When the backflow baffle is in the second extreme position, the backflow prevention baffle is sealed and closed.
  • the rotation of the backflow prevention baffle is set to have a maximum rotation angle. Therefore, when the backflow prevention flap is opened and reaches the first limit position, the extension direction of the flap portion of the anti-backflow flap from the rotation axis will not be completely perpendicular to the fan, so that there are two sides of the flap portion of the anti-backflow flap on the left and right sides. The pressure difference prevents the backflow prevention piece from being able to close when the fan stops running, and thus cannot perform its backflow prevention function.
  • the anti-backflow baffle when the fan cannot operate normally due to a fault, for example, the anti-backflow baffle corresponding to the failed fan is closed, thereby not affecting the cooling airflow of other fans and ensuring the stability of the cooling system.
  • the rotation axis of the anti-backflow baffle is arranged in a substantially vertical direction, so that the wind pressure on the left and right sides of the anti-backflow baffle is similar and will not swing during the operation of the fan, thus avoiding Abnormal noise is prevented and the service life of the anti-backflow baffle is extended.
  • the included angle between the extension plane where the baffle portion is located and the extension plane where the backflow prevention sheet frame is located ranges from 80 degrees to 88 degrees.
  • the range of the angle between the extension plane where the baffle part is located and the extension plane where the backflow prevention piece frame is located is set to 80 degree to 88 degrees, while ensuring the air intake effect of the anti-backflow baffle, it also ensures that the anti-backflow baffle can be closed correctly when the fan is stopped.
  • a first cable management groove is provided on at least one frame of the backflow prevention sheet frame on a side away from the fan.
  • the slot space and the internal space on both sides of the anti-backflow plate can be effectively utilized, thereby preventing the fan's power cord from blocking the fan's air inlet. It improves the heat dissipation efficiency of the fan and prevents the fan power cord from being entangled inside the fan, improving the safety of the fan operation.
  • a side of the first cable management trough away from the fan is substantially flush with a side of the anti-backflow sheet frame away from the fan.
  • the fan frame structure further includes a second frame, and the second frame is detachably installed on the first frame to cover the first cable management trough.
  • the second frame By detachably installing the second frame on the first frame to cover the cable management trough area, not only can the hidden fan power cord be prevented from dust intrusion, but the power cord of the cable management trough can also be protected.
  • a stopper is provided on at least one of the upper and lower frames of the backflow prevention sheet frame, and the stopper is configured to define the first limit position.
  • the stopper includes a protrusion, and the protrusion is provided on a side of the frame corresponding to the stopper that faces the backflow prevention sheet frame.
  • the stop member includes a sliding member provided on the blocking piece and a sliding groove provided on a frame corresponding to the stop member, wherein the sliding member and the sliding member The cooperation of the slot defines pivoting of the flap portion.
  • the backflow prevention sheet frame includes a plurality of backflow prevention baffles, and the plurality of backflow prevention baffles
  • the rotation axes of the backflow baffles are respectively arranged at intervals, wherein the widths of the plurality of anti-backflow baffles are slightly larger than the intervals between the rotation axes.
  • the widths of the plurality of anti-backflow baffles spaced apart from each other are slightly larger than the spacing distance between the respective rotation axes, so that when the fan fails, the baffle portion of the corresponding anti-backflow baffle is farther away from the rotation axis.
  • One end is overlapped on the rotating shaft of its adjacent anti-backflow baffle to form a closure. In this way, while ensuring the stability of the heat dissipation effect, the structure of the backflow prevention baffle is simplified.
  • the baffle portion when the baffle portion is located at the first extreme position, there is a distance between an end of the baffle portion close to the fan and the fan to form a mixed flow chamber.
  • a mixed flow cavity is formed inside the fan frame structure.
  • the mixed flow cavity can increase the fan air inlet area and improve the fan's heat dissipation effect.
  • the backflow prevention plate frame is provided with a flange on the side facing the fan, and one end of the flange, the fan and the backflow prevention plate close to the fan defines the mixed flow. cavity.
  • the flange is provided so that the flange, the fan and the backflow prevention baffle define a mixed flow chamber close to one end of the fan.
  • the mixed flow chamber has a larger space, further increasing the fan inlet.
  • the air outlet area improves the cooling effect of the fan.
  • the inward recessed structure formed by the structure of the cable management trough can be used as a flange, so that the structure of the anti-backflow fan frame not only has the function of cable management, but also increases the space of the mixed flow cavity. That is, the fan air inlet area is increased and the heat dissipation effect of the fan is improved.
  • the upper and lower frames of the backflow prevention plate frame are respectively provided with rotation grooves aligned with each other, and both ends of the rotation shaft of the backflow prevention plate frame are rotatably connected to the rotation shaft respectively. groove.
  • the first frame includes a plurality of fan installation spaces adapted to accommodate a plurality of fans
  • the fan frame structure includes a plurality of anti-backflow fin frames, wherein: The number is less than or equal to the number of the plurality of fan installation spaces, and the plurality of anti-backflow sheet frames are respectively disposed on the first frame at positions corresponding to the plurality of fans.
  • the plurality of fan installation spaces are arranged sequentially along the vertical direction, and the The plurality of anti-backflow sheet frames are also arranged along the vertical direction corresponding to the plurality of fan installation spaces.
  • adjacent frames of two adjacent backflow prevention sheet frames among the plurality of backflow prevention sheet frames form a second cable management groove.
  • the spacing between adjacent frames of adjacent backflow prevention sheet frames can be set to form a cable management groove, thereby simplifying the backflow prevention sheet frame and achieving cable management of the power cord.
  • the backflow prevention sheet frame is detachably disposed on the first frame.
  • An embodiment of the present application provides a fan frame structure.
  • the fan frame structure includes a first frame and several backflow prevention sheet frames, and the backflow prevention sheet frame is detachably installed on the first frame; wherein, the The first frame is provided with several fan installation spaces, and several fans are rotatably installed on the fan installation spaces on the first frame; several anti-backflow baffles are movably connected to the anti-backflow plate frame, and the anti-backflow plates are movably connected to the first frame.
  • each fan is provided with one or more anti-backflow baffles; each anti-backflow baffle can rotate relative to the anti-backflow plate frame; when the fan is operating normally, the fan corresponds to The anti-backflow baffle is opened and does not block the fan; when the fan fails, the anti-backflow baffle corresponding to the fan is closed and blocks the fan; when the fan is operating normally, there is a setting between the anti-backflow baffle and the fan.
  • a mixed flow cavity is formed inside the fan frame.
  • the mixed flow cavity can increase the fan air inlet area and improve the fan's heat dissipation effect.
  • the fan fails to operate normally, because the fan frame structure is provided with an anti-backflow baffle, the failed fan does not affect the normal operation of other fans, thereby improving the stability of the cooling system.
  • the plurality of backflow prevention baffles are arranged left and right along the length direction of the backflow prevention plate frame and are connected to the backflow prevention plate frame. Compared with the anti-backflow baffles arranged up and down, the anti-backflow baffles arranged on the left and right will have less impact on them due to their own gravity after long-term use, so the probability of abnormal noise will be greatly reduced.
  • the backflow prevention baffle includes a rotating shaft and a baffle part; the backflow prevention baffle frame A row of rotating grooves is provided on each of the upper and lower sides of the frame. Each row of rotating grooves includes several rotating grooves, and the rotating grooves on the upper and lower sides are arranged correspondingly.
  • the rotation shaft in each backflow prevention baffle is rotatably installed in a pair of correspondingly arranged rotation grooves. The rotation range of the rotation axis is limited to a set range.
  • the backflow prevention sheet frame is provided with a stopper.
  • Each backflow prevention baffle is provided with a stopper, and the stopper is used to limit the rotation range of the rotation shaft.
  • the stopper is used for limiting, the movement of the anti-backflow baffle does not require the use of a fixed rotating track. Therefore, such a design is simpler, does not increase the friction resistance during rotation, and extends the service life of the backflow prevention baffle.
  • the number of the backflow prevention plate frames is equal to the number of the fans, and the backflow prevention plate frames are arranged corresponding to the fans.
  • the anti-backflow frame is set correspondingly with the fan, it can ensure the independent operation of a single fan. When a single fan fails, the impact on other fans will be reduced.
  • At least one cable management slot is provided on the left and right sides of each backflow prevention sheet frame, and the cable management slot is used to organize the power cord of the fan.
  • the slot space and internal space on both sides of the anti-backflow shield can be effectively used to prevent the fan power cord from blocking the fan's air inlet, improve the fan's heat dissipation efficiency, and also prevent the fan power cord from being blocked. Wrap into the inside of the fan to improve the safety of fan operation.
  • a wire trough is provided in the connection blank space between each backflow prevention sheet frame.
  • the fan frame structure further includes a second frame, the second frame is detachably installed on the first frame, and the second frame is used to cover the cable management trough area.
  • the power cord can be hidden, thereby improving the overall beauty and tidiness of the fan frame.
  • the backflow prevention frame in the fan frame structure is installed facing the communication component and close to the communication component.
  • An embodiment of the present application also provides a switch.
  • the fan frame structure in the switch adopts any of the above fan frame structures.
  • An embodiment of the present application also provides a communication device, including the windshield device according to any of the preceding embodiments. Fan frame structure.
  • Figure 1 is an exploded structural view of a fan frame structure provided by an embodiment of the present application.
  • Figure 2 is a structural diagram of a backflow prevention sheet frame provided by an embodiment of the present application.
  • Figure 3 is a top view of a fan frame provided by an embodiment of the present application.
  • Figure 4 is a top view of the system when the fan frame structure provided by an embodiment of the present application is used in a switch.
  • FIG. 5 is an exploded structural view of the fan frame structure of the embodiment of FIG. 1 .
  • FIG. 6 is a structural diagram of the backflow prevention sheet frame of the embodiment of FIG. 2 .
  • FIG. 7 is a top view of the fan frame in the embodiment of FIG. 3 .
  • the terms “in a generally vertical direction”, “in a generally transverse direction” and “roughly flush with” in this application may include “in an exactly vertical direction”, “in an exactly “horizontally” and “just flush with” may also include “in a roughly vertical direction”, “roughly horizontally” and “roughly flush with”, etc.
  • ordinal terms such as “first,””second,” etc. to modify elements does not imply any priority, order, or order of one element with respect to another element or the performance of the actions in the method. Chronologically. Unless specifically stated otherwise, such ordinal numbers are used only as labels to distinguish one element having a particular name from another element having the same name (other than the ordinal number). For example, the "first zone” may be named so as to distinguish it only from, for example, the "second zone”. The mere use of the ordinal numbers "first” and “second” before the term “region” does not indicate any other relationship between the two regions, and likewise does not imply any other characteristic of either or both regions.
  • backflow prevention devices are usually installed to reduce the impact of a failed fan on the entire cooling system after it stops running.
  • One known method is to provide a plurality of anti-backflow baffles arranged in a vertical direction on the rear side of the fan, and the upper ends of the anti-backflow baffles are hingedly connected to the fan box.
  • the lower end of the upper backflow prevention baffle naturally overlaps the upper end of the lower backflow prevention baffle.
  • the anti-backflow baffles arranged in the vertical direction are rotatably connected in the opposite installation frame through the rotation shaft. When there is no airflow passing through, the anti-backflow baffle will naturally sag under the action of gravity.
  • the forward airflow pushes the anti-backflow baffle to rotate, allowing the airflow to pass through.
  • FIG. 1 and FIG. 5 are exploded structural views of a fan frame structure provided by an embodiment of the present application.
  • the fan frame structure may include a first frame 1 , a second frame 2 and a backflow prevention sheet frame 3 .
  • the first frame 1 is provided with several fan installation spaces, and the plurality of fans are rotatably installed on the fan installation spaces on the first frame 1 .
  • the anti-backflow sheet frames 3 are respectively arranged corresponding to the fans.
  • the backflow prevention sheet frame 3 can be detachably installed on the first frame 1 .
  • the anti-backflow plate frame 3 is movably connected with several anti-backflow baffles 31 .
  • Each backflow prevention baffle 31 includes a rotation axis and a baffle portion, and is capable of pivoting relative to the rotation axis.
  • the fan when the fan is running, its corresponding anti-backflow baffle 31 moves inward around the rotation axis. Pivot (open) for air intake.
  • the anti-backflow baffle 31 has a first limit position when opened. At this position, the anti-backflow baffle 31 has a maximum opening angle.
  • the anti-backflow baffle 31 pivots outward (closes) to seal off the airflow.
  • the anti-backflow flap 31 has a second extreme position when closed. In this position, the anti-backflow flap 31 is sealed to prevent airflow from entering the first frame 1 .
  • the left and right frames of the backflow prevention frame 3 are respectively provided with cable management slots 33 on the side of the backflow prevention frame 3 away from the fan.
  • the cable management slot 33 is used to accommodate the power cord to prevent the power cord from blocking the air inlet of the anti-backflow shield 31 and the risk that the power cord may be entangled inside the fan frame structure.
  • the second frame 2 can be detachably installed on the first frame 1 .
  • the second frame 2 can cover part of the area on the backflow prevention sheet frame 3 (for example, the area of the cable management groove 33 ), as long as it does not affect the air inlet of the backflow prevention sheet frame 3 .
  • the second frame 2 covers the area corresponding to the cable management slot 33, it can prevent dust from intruding into the power cord in the cable management slot 33, and can protect the power cord.
  • backflow prevention plate frame 3 and the first frame 1, and the second frame 2 and the first frame 1 can be detachably connected by threads independently of each other, or other methods can be used for detachable connection. , such as using different methods such as snap connection, slide connection, etc., are not restricted here.
  • FIG. 2 and FIG. 6 are structural diagrams of the backflow prevention sheet frame 3 provided by the embodiment of the present application.
  • the backflow prevention baffles 31 are installed in the backflow prevention plate frame 3 in a left-right arrangement.
  • the left-right arrangement here means that the backflow prevention baffles 31 extend in a substantially vertical direction, and the plurality of backflow prevention baffles 31 are arranged at intervals in a substantially transverse direction, as shown in FIGS. 2 and 6 .
  • a row of rotation grooves (not shown in Figures 2 and 6) can be respectively provided on the upper and lower sides of the backflow prevention plate frame 3, and each row of rotation grooves includes several rotation grooves.
  • the rotation grooves on the upper and lower side frames are set correspondingly.
  • Each pair of corresponding rotation grooves can be movably connected with an anti-backflow baffle 31 .
  • the anti-backflow baffle 31 may include a rotating shaft 311 and a baffle portion 312. The two ends of the rotating shaft 311 are respectively rotatably installed in a pair of correspondingly provided rotating grooves. When the rotating shaft 311 pivots, the baffle portion 312 connected thereto will be driven to rotate.
  • the anti-backflow baffle 31 When the fan corresponding to the anti-backflow baffle 31 is operating normally, the anti-backflow The flow flap 31 opens (pivots inward) for air intake. When the fan corresponding to the anti-backflow baffle 31 fails, the anti-backflow baffle 31 is closed (pivoted outward to the second extreme position) to prevent air inflow.
  • the anti-backflow sheet frame 3 may also be provided with a stopper 32 .
  • Each backflow prevention baffle 31 can correspond to one stopper 32 , or multiple stoppers 32 can be provided accordingly.
  • the stopper 32 is used to limit the maximum rotation angle of the rotation shaft 311 and thereby limit the rotation position (first limit position) of the baffle portion 312 of the backflow prevention baffle 31 .
  • the range of the maximum rotation angle is less than 90 degrees.
  • the maximum rotation angle may range between 80 degrees and 88 degrees, or may be 87 degrees.
  • the maximum rotation angle refers to the angle between the plane on which the blocking piece 312 extends and the plane on which the backflow prevention piece frame 3 extends when the blocking piece 312 rotates to the first limit position.
  • the stopper 32 takes the form of a protrusion.
  • the structure is simple, and during the rotation of the anti-backflow baffle 31, the friction resistance of the rotation of the anti-backflow baffle 31 will not be increased, which can extend the service life of the anti-backflow baffle 31.
  • the maximum rotation angle of the rotation shaft 311 can be close to 90 degrees, which can maximize the air intake and reduce the impact of the backflow prevention flap 31 on the heat dissipation performance.
  • protrusions serving as stops 32 may be provided on the lower side frame of the backflow prevention sheet frame 3 .
  • the protrusions can also be correspondingly provided on the upper frame of the backflow prevention plate frame 3 , or corresponding protrusions can also be provided on the upper and lower side frames to realize the rotation of the backflow prevention plate 31 .
  • the upper and lower forces are evenly applied, thereby ensuring the limiting effect and reducing deformation caused by uneven force on the backflow prevention baffle 31 .
  • the position and number of the protrusions serving as the stop members 32 are not limited in this application.
  • the left and right backflow prevention baffles provided in this application has the following advantages. (1) Compared with the anti-backflow baffles arranged up and down, the anti-backflow baffles arranged on the left and right sides have less impact on them due to their own gravity, so there will be no abnormal noise during use. (2) The left and right backflow prevention baffles provided in this application use protrusions as stoppers for limiting, instead of using fixed rotating tracks. Therefore, the design is simpler and does not increase the friction during rotation. Frictional resistance, extending the service life of the anti-backflow baffle.
  • the stopper can be realized by the cooperation of the sliding part and the sliding groove.
  • the stop member may include a sliding member provided on the baffle part, and a sliding groove provided on the frame corresponding to the stop member, wherein the sliding member extends into the corresponding sliding groove, and the baffle part pivots , the sliding piece moves in the direction of the sliding groove.
  • One end of the sliding groove defines the limit position when the anti-backflow baffle is opened, that is, defines the first limit position of the anti-backflow baffle, and the other end of the sliding groove defines the limit position when the anti-backflow baffle is closed, that is, defines the anti-backflow baffle. to the second extreme position, so that the cooperation between the sliding member and the sliding groove limits the pivoting of the baffle portion.
  • the width of the backflow prevention sheet frame 3 in the width direction (the direction perpendicular to the vertical direction and the transverse direction) is d.
  • the anti-backflow flap frame 3 is set such that when the anti-backflow flap 31 is in an open state (located at the first limit position), the width of the projection of the anti-backflow flap 31 in the width direction on the anti-backflow flap frame 3 is d0 , where d0 ⁇ d. Because d0 ⁇ d, that is, when the backflow prevention flap 31 is located at the first limit position, there will be a certain distance between the fan and the end of the blocking portion 312 of the backflow prevention flap 31 facing the fan.
  • a mixed flow cavity will be formed inside the fan frame structure, which can increase the fan air inlet area and improve the fan's heat dissipation effect.
  • the mixed flow cavity can increase the fan inlet area and improve the heat dissipation effect of the fan;
  • the fan frame structure is equipped with an anti-backflow baffle 31, the failed fan will not affect Other fans operate normally, thus improving the stability of the cooling system.
  • the anti-backflow frame 3 and the fans are arranged in one-to-one correspondence, the impact of a single fan failure on other normally operating fans will be reduced.
  • the working principle of the anti-backflow baffle 31 provided in this application is as follows: when the fan is working normally, the wind speed on the side of the anti-backflow baffle 31 close to the fan end is high and the air pressure is low. Under the action of the pressure difference, the backflow prevention baffle 31 begins to pivot through the rotating shaft 311 until it reaches the first limit position defined by the stopper 32 Place to stop. At this time, since the extension plane of the anti-backflow baffle 31 is almost parallel to the direction of air inlet from the fan, the anti-backflow baffle 31 does not affect the normal operation of the fan.
  • the air inlet direction of the fan is perpendicular to the extension direction of the extension plane of the anti-backflow baffle 31, so that the anti-backflow baffle 31 seals the corresponding fan port, preventing the airflow from other normal fans from not passing through the communication components that generate high heat.
  • the device flows directly from the failed fan. Therefore, by arranging the anti-backflow baffle 31 of the present application, the heat dissipation capacity of the system can be optimized even when the fan fails.
  • the power cord on the fan assembly is relatively long and difficult to organize, and the power cord may block the air inlet and affect the fan's heat dissipation.
  • the fan's power cord may become entangled in the fan, affecting the safety of the fan's operation.
  • the anti-backflow sheet frame 3 of the embodiment of the present application also includes a wire management slot 33 .
  • cable management slots 33 are respectively provided on the left and right sides of the backflow prevention sheet frame 3 for arranging the power cords of the fans. Because the anti-backflow sheet frame 3 is arranged at the front end of the air inlet side of the fan, and the cables are routed through the front cable management frame, the fan's power cord is prevented from blocking the fan's air inlet, improving the fan's heat dissipation efficiency; at the same time, it also prevents the fan from blocking the fan's air inlet. The power cord is wrapped inside the fan to improve the safety of fan operation.
  • the cable management groove 33 is provided on the side of the left and right sides of the anti-backflow sheet frame 3 away from the corresponding fan.
  • the cable management slot 33 can also be provided on at least one of the upper side frame, the lower side frame, the left side frame, or the right side frame of the anti-backflow sheet frame 3 . This application does not limit the management.
  • the slot space and confusion of the frame of the backflow prevention plate 31 can be effectively utilized.
  • the internal space formed by the flow chamber 34 solves the problem of difficult wiring of the fan power supply, and at the same time prevents the power cable from affecting the airflow of the mixed flow chamber 34, ensuring the heat dissipation performance of the mixed flow chamber 34.
  • the side of the cable management slot 33 away from the fan is substantially flush with the side of the anti-backflow sheet frame 3 away from the fan.
  • the cable management problem can be solved without affecting the flatness of the side of the anti-backflow sheet frame 3 and facilitating the second frame 2 installation.
  • a wire management slot (not shown in the figure) can also be provided in the connection blank space of each backflow prevention sheet frame 3 to further improve the space utilization of the fan frame structure and improve the wire management capability.
  • the connecting space of each backflow prevention plate frame 3 refers to the gap area between adjacent backflow prevention plate frames 3 .
  • the adjacent frames of the vertically adjacent anti-backflow sheet frames 3 can be used to implement a horizontal cable management trough structure, thereby further improving the space utilization of the fan frame structure and improving the cable management capability.
  • the second frame 2 can be detachably installed on the first frame 1.
  • the second frame 2 is used to cover the area of the cable management trough and is used to hide the fan power cord, so that in this application
  • the fan frame structure is more beautiful and neat.
  • the anti-backflow baffle 31 includes a rotating shaft 311 and a baffle portion 312 .
  • the stopper 32 includes a protrusion, which is used to limit The first extreme position of the backflow prevention baffle 31. When the blocking piece 312 moves to this position, the rotating shaft 311 cannot continue to rotate.
  • the projected width of the anti-backflow blade frame 3 in the width direction is greater than the projected width of the anti-backflow baffle 31 in the width direction when it moves to the maximum position, a mixed flow cavity 34 will be formed in the fan frame structure, and the mixed flow cavity 34 will Further increases the air inlet area when the fan is running and improves the fan's heat dissipation efficiency.
  • the backflow prevention sheet frame 3 is disposed between the communication components that require heat dissipation (such as switching network boards) and the fans of the first frame 1, wherein the backflow prevention sheet frame 3 and the communication A mixed flow cavity 35 is formed between the devices, and a mixed flow cavity 34 is formed between the backflow prevention plate frame 3 and the corresponding fan, thereby increasing the overall mixed flow cavity volume and improving the heat dissipation efficiency of the fan.
  • the backflow prevention plate frame 3 is provided with a flange 36 on the side facing the fan.
  • the flange 36 , the fan and the backflow prevention plate 31 define the mixed flow chamber 34 at one end close to the fan.
  • the flange 36 is provided so that one end of the flange 36, the fan and the anti-backflow baffle 31 close to the fan defines a mixed flow chamber 34.
  • the mixed flow chamber 34 has a larger space and further increases the fan air inlet area. Improve the cooling effect of the fan.
  • the inward concave structure formed by the structure of the cable management slot 33 can be used as a flange, so that the structure of the anti-backflow fan frame not only has a cable management function, but also increases the space of the mixed flow chamber 34 , that is, the fan air inlet area is further increased and the heat dissipation effect of the fan is improved.
  • FIG. 4 is a top view of the communication device (for example, a switch) when the fan frame structure in the present application is used in the communication device.
  • a switch for example, a switch
  • This application does not limit the application scenarios of the fan frame structure, which can be used in any electronic equipment that requires heat dissipation.
  • Figure 4 only takes a switch as an example for illustration.
  • the switch includes service line cards and switching network boards.
  • the anti-backflow sheet frame 3 in the fan frame structure of this embodiment faces the mesh board, that is, the backflow prevention sheet frame 3 faces the communication components and is close to the communication components.
  • the first frame 1 and the fan installed therein are at the rear end of the anti-backflow frame 3 and away from the communication components.
  • a certain distance can be left between the anti-backflow sheet frame 3 and the communication components to form the system mixed flow cavity 35 .
  • the wind speed on the side of the anti-backflow baffle 31 close to the fan is high and the air pressure is low.
  • the backflow prevention baffle 31 pivots through the rotation axis until it reaches the stop position (first limit position) defined by the stop member and stops, as shown in Figure 4, at this time , the extension direction of the extension plane of the anti-backflow baffle 31 is almost parallel to the direction of air inlet of the fan, so that the anti-backflow baffle 31 does not affect the normal operation of the fan.
  • the mixed flow cavity 34 formed inside the fan frame structure can further increase the air inlet area and improve the heat dissipation efficiency of the fan.
  • the corresponding anti-backflow baffle 31 close to the fan side has low wind speed and high air pressure. Under the effect of the formed pressure difference, the backflow prevention baffle 31 pivots to abut the upper stop of the rotation shaft 311 of the adjacent backflow prevention baffle 31 , as shown in FIG. 4 . At this time, the anti-backflow baffle 31 moves the corresponding fan The air inlet is sealed to prevent the air flow from other normal fans from flowing directly from the failed fan without passing through the high-heat components on the communication components.
  • the number of multiple anti-backflow fin frames 3 may be less than or equal to the number of the plurality of fan installation spaces, and the multiple anti-backflow fin frames 3 are respectively provided on the first frame 1 corresponding to the positions of the multiple fans.
  • the anti-backflow sheet frame 3 is only installed on the fan installation space where the fan is installed, and the backflow prevention sheet frame 3 is installed on the fan installation space where the fan is not installed.
  • the number of backflow prevention plate frames 3 is smaller than the number of the plurality of fan installation spaces.
  • a fan is installed in each fan installation space.
  • the number of backflow prevention sheet frames 3 is equal to the number of multiple fan installation spaces.

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Abstract

一种风扇框结构、交换机和通信设备。该风扇框结构，包括：第一框架(1)，设有适于容纳风扇的风扇安装空位；和防回流片框架(3)，设置于第一框架(1)上的对应于风扇的位置。防回流片框架(3)包括可转动地设置在防回流片框架(3)上的防回流挡片(31)。防回流挡片(31)包括：沿大致竖直方向延伸的转动轴(311)；以及可围绕转动轴枢转的挡片部(312)。防回流挡片(31)打开时具有第一极限位置，其中，防回流挡片(31)在第一极限位置上时，挡片部(312)所在的延伸平面与防回流片框架(3)所在的延伸平面的夹角的范围为小于90度。防回流挡片(31)在关闭时还具有第二极限位置，且防回流挡片(31)在第二极限位置时，防回流挡片(31)密封闭合。

Description

风扇框结构、交换机及通信设备
相关申请的交叉引用
本申请要求于2022年07月19日提交中国专利局、申请号为202210844932.9、发明名称为“一种风扇框结构和交换机”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电子设备的散热技术领域，尤其涉及一种风扇框结构、交换机和通信设备。
背景技术
通信设备通常包括多个机箱，每个机箱中设置有光模块、交换芯片、CPU等各种通信部件，这些通信部件在工作过程中均会产生热量。为了保证机箱内各个部件的正常运行，必须为这些部件及时散热。散热能力是网络可靠性的主要影响因素之一，散热能力不足将可能导致通信设备的高延时、断网，甚至造成设备异常。目前大部分设备的散热主要依赖于抽风风扇，并且会配置多组风扇以增强散热能力。
多组风扇由机箱中的电源模块通过主板供电。风扇工作时会产生气流，气流将直接进入与风扇紧靠的通信部件区域中，并在各通信部件之间的间隙流动，形成风道。通过风道中的气流将通信部件产生的热量带走。由于风扇紧靠通信部件，且气流直接进入与风扇位置对应的通信部件区域，所以各组风扇主要是用于对其位置对应的那部分通信部件进行散热。在这种设计中，由于风扇紧靠通信部件，风扇的进风面积较小，影响风扇的散热性能。
当风扇运行时间较长之后，将可能出现损坏现象。当其中任意风扇失效停转时，由于其余的风扇仍在正常运转，而失效的风扇无法产生推力，因此会导致失效的风扇的出风口的压力大于其入风口的压力，从而导致气流从该 失效风扇的出风口回流至入风口处。这样，这些气流会串流到机箱内的设备上，影响整个风扇组的散热功能。因此，需要设置防回流装置，降低失效的风扇停止运行后对整个散热系统的影响。
发明内容
本申请实施例提供一种风扇框结构，包括：第一框架，所述第一框架设有适于容纳风扇的风扇安装空位；和防回流片框架，所述防回流片框架设置于所述第一框架上的对应于所述风扇的位置。所述防回流片框架包括可转动地设置在所述防回流片框架上的防回流挡片，所述防回流挡片包括：转动轴，所述转动轴沿大致竖直方向延伸；以及挡片部，所述挡片部可围绕所述转动轴枢转，且所述防回流挡片打开时具有第一极限位置，其中，所述防回流挡片在所述第一极限位置上时，所述挡片部所在的延伸平面与所述防回流片框架所在的延伸平面的夹角的范围为小于90度；及所述防回流挡片在关闭时还具有第二极限位置，且所述防回流挡片在所述第二极限位置时，所述防回流挡片密封闭合。
本实施例中，通过设置使得防回流挡片的旋转具有最大旋转角度。因此，防回流挡片在打开到达第一极限位置时，防回流挡片的挡片部从转动轴起的延伸方向不会完全垂直于风扇，从而使得防回流片的挡片部左右两侧存在压力差，避免当风扇停止运转时，防回流片无法闭合，进而无法发挥其防回流的功能。换言之，通过防回流挡片的设置，实现当风扇由于例如故障而不能正常运行时，该失效风扇对应的防回流挡片闭合，从而不影响其他风扇的散热气流，保证了散热系统的稳定性。
此外，本实施例中，通过在大致竖直方向上设置的防回流挡片的转动轴，使得防回流挡片的左右两侧的风压相近，不会在风扇运行过程中发生摆动，避免了异响，延长了防回流挡片的使用寿命。
在一实施例中，所述挡片部所在的延伸平面与所述防回流片框架所在的延伸平面的所述夹角的范围为80度至88度之间。
本实施例中，通过将所述防回流片在所述第一极限位置上时，所述挡片部所在的延伸平面与所述防回流片框架所在的延伸平面的夹角的范围设置为80度至88度之间，实现在保证防回流挡片的进风效果的同时，保证风扇停运时防回流挡片能够正确地关闭。
在一实施例中，所述防回流片框架的至少一个边框的远离所述风扇的侧面上设有第一理线槽。
在本实施例中，通过在防回流片框架上设置第一理线槽，可以有效地利用防回流挡片两侧的槽位空间和内部空间，避免了风扇的电源线挡住风扇的进风口，提高风扇的散热效率，同时也能避免风扇电源线被缠绕进风扇内部，提高风扇运行的安全性。
在一实施例中，所述第一理线槽的远离所述风扇的侧面与所述防回流片框架的远离所述风扇的侧面大致齐平。
在本实施例中，通过设置第一理线槽的远离所述风扇的侧面与所述防回流片框架的远离所述风扇的侧面大致齐平，实现解决理线问题的同时，不影响防回流风扇框的整体结构。
在一实施例中，所述风扇框结构还包括第二框架，所述第二框架可拆卸地安装于所述第一框架上，以覆盖所述第一理线槽。
通过将第二框架可拆卸地安装于第一框架上以覆盖理线槽区域，不仅可以将隐藏风扇电源线防灰尘的侵入，还可以起到保护理线槽的电源线的作用。
在一实施例中，所述防回流片框架上下边框中的至少一者上设置有止位件，所述止位件配置为限定所述第一极限位置。
在一实施例中，所述止位件包括凸起，所述凸起设于所述止位件对应的边框的朝向所述防回流片框架的一侧上。
在一实施例中，所述止位件包括设于所述挡片部上的滑动件，及设于所述止位件对应的边框上的滑动槽，其中，所述滑动件和所述滑动槽的配合限定所述挡片部的枢转。
在一实施例中，所述防回流片框架包括多个防回流挡片，且所述多个防 回流挡片的转动轴分别以间隔距离设置，其中，所述多个防回流挡片的宽度略大于所述转动轴之间的所述间隔距离。
本实施例中，彼此间隔设置的多个防回流挡片的宽度均略大于各个转动轴之间的间隔距离，从而使得风扇失效时，相应的防回流挡片的挡片部的远离其转动轴的一端搭接在其相邻的防回流挡片的转动轴上，形成闭合。这样，保证了散热效果的稳定性的同时，简化了防回流挡片的结构。
在一实施例中，当所述挡片部位于所述第一极限位置时，所述挡片部的靠近所述风扇的一端与所述风扇之间具有距离以形成混流腔。
本实施例中，通过防回流挡片的靠近风扇的一端与风扇之间的距离的设置，实现在风扇框结构内部形成混流腔。当风扇正常运行时，该混流腔能增加风扇进风口面积，提升风扇的散热效果。
在一实施例中，所述防回流片框架在朝向所述风扇的侧面上设有凸缘，所述凸缘、所述风扇和所述防回流挡片靠近所述风扇的一端限定所述混流腔。
在本实施例中，通过设置的凸缘，使得所述凸缘、所述风扇和所述防回流挡片靠近所述风扇的一端限定混流腔，该混流腔具有更大空间，进一步增加风扇进风口面积，提升风扇的散热效果。
额外地，在一实施例中，可以利用理线槽的结构所形成的向内凹陷结构作为凸缘，使得该防回流风风扇框的结构不仅具有理线功能，还增加了混流腔的空间，即，增加了风扇进风口面积，提升了风扇的散热效果。
在一实施例中，所述防回流片框架的所述上下边框分别设置有彼此对准的转动槽，所述防回流片框架的所述转动轴的两端分别可转动地连接于所述转动槽。
在一实施例中，所述第一框架包括适于容纳多个风扇的多个风扇安装空位，及所述风扇框结构包括多个防回流片框架，其中，所述多个防回流片框架的数量小于或等于所述多个风扇安装空位的数量，且所述多个防回流片框架分别设置于所述第一框架上的对应于所述多个风扇的位置上。
在一实施例中，所述多个风扇安装空位沿所述竖直方向依次布置，且所 述多个防回流片框架也分别对应于所述多个风扇安装空位延所述竖直方向布置。
在一实施例中，所述多个防回流片框架中相邻两个防回流片框架的相邻边框形成第二理线槽。
在本实施例中，相邻防回流片框架的相邻边框的间距可以设置为形成理线槽，简化防回流片框架的同时，实现电源线的理线。
在一实施例中，所述防回流片框架可拆卸地设置于所述第一框架上。
本申请实施例提供一种风扇框结构，所述风扇框结构包括第一框架和若干个防回流片框架，所述防回流片框架可拆卸地安装于所述第一框架上；其中，所述第一框架设置有若干个风扇安装空位，若干个风扇可转动地安装于第一框架上的风扇安装空位上；所述防回流片框架上活动连接有若干个防回流挡片，所述防回流挡片与所述风扇对应设置，每个风扇对应设置一个或多个防回流挡片；每个防回流挡片均能相对于所述防回流片框架转动；当风扇正常运行时，该风扇对应的防回流挡片打开，不遮挡风扇；当风扇故障时，该风扇对应的防回流挡片关闭，遮挡风扇；当风扇正常运行时，所述防回流挡片与所述风扇之间有设定宽度的距离；所述风扇框内部形成混流腔体，所述混流腔体用于提高风扇的进风口面积。
通过设置防回流片框架以及防回流挡片的宽度，在风扇框内部形成一个混流腔体，当风扇正常运行时，该混流腔体能增加风扇进风口面积，提升风扇的散热效果。当风扇不能正常运行时，因为该风扇框结构设置有防回流挡片，所以该失效风扇并不影响其他风扇的正常运行，从而提高了散热系统的稳定性。
在一实施例中，所述若干个防回流挡片沿所述防回流片框架的长度方向呈左右排布连接于所述防回流片框架上。左右排布的防回流挡片相比于上下排布的防回流挡片在长时间使用后，由于自身重力对其影响较小，因此出现异响的概率将会大大降低。
在一实施例中，所述防回流挡片包括转动轴和挡片部；所述防回流片框 架上下两侧各设置一排转动槽，每排转动槽中包括若干个转动槽，上下两侧的转动槽相对应设置。每个防回流挡片中的转动轴可转动地安装于一对对应设置的转动槽内。所述转动轴的转动范围限定在设定范围内。
在一实施例中，所述防回流片框架上设置有止位件。每个防回流挡片对应设置一个止位件，所述止位件用于限定转动轴的转动范围。当采用止位件进行限位时，防回流挡片的运动将不需要采用固定的旋转轨道。因此，这样的设计更加简单，且不增加旋转时的摩擦阻力，延长防回流挡片的使用寿命。
在一实施例中，所述防回流片框架的个数与所述风扇的个数相等，所述防回流片框架与所述风扇对应设置。当防回流片框架与风扇对应设置时，可以保证单个风扇的独立运行，当单个风扇失效时，将会降低对其他风扇的影响。
在一实施例中，每个所述防回流片框架上左右两侧至少设置有一个理线槽，所述理线槽用于整理风扇的电源线。通过设置理线槽，可以有效地利用防回流挡片两侧的槽位空间和内部空间，避免了风扇的电源线挡住风扇的进风口，提高风扇的散热效率，同时也能避免风扇电源线被缠绕进风扇内部，提高风扇运行的安全性。
在一实施例中，所述每个防回流片框架之间的连接空白处，设置有理线槽。
在一实施例中，所述风扇框结构还包括第二框架，所述第二框架可拆卸地安装于所述第一框架上，所述第二框架用于覆盖所述理线槽区域。
通过第二框架覆盖理线槽区域，可以将电源线隐藏，提高风扇框框架整体的美观和整洁。
在一实施例中，所述风扇框结构中的所述防回流框架正对通信部件安装，靠近通信部件。
本申请实施例还提供一种交换机，所述交换机中的风扇框结构采用上述任一项的风扇框结构。
本申请实施例还提供一种通信设备，包括根据前述任一实施例所述的风 扇框结构。
附图说明
图1为本申请一实施例提供的风扇框结构的爆炸结构图。
图2为本申请一实施例提供的防回流片框架的结构图。
图3为本申请一实施例提供的风扇框的俯视图。
图4为本申请一实施例提供的风扇框结构用于交换机时，系统的俯视图。
图5为图1实施例的风扇框结构的爆炸结构图。
图6为图2实施例的防回流片框架的结构图。
图7为图3实施例的风扇框的俯视图。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面结合附图对本申请作进一步详细地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
除非上下文中另有定义，本申请中的术语“在大致竖直方向”、“在大致横向”以及“与…大致齐平”等，可以包括“在正好的竖直方向”、“在正好的横向”以及“与…正好齐平”，也可以包括“在大致竖直方向”、“在大致横向”以及“与…大致齐平”等。
在本申请中，使用诸如“第一”，“第二”等的序数术语来修饰元件并不表示一个元件相对于另一个元件的任何优先级，位次或顺序，或者执行方法中的动作的时间顺序。除非另外特别说明，否则此类序数词仅用作标签以将具有特定名称的一个元件与具有(除序数词外)相同名称的另一元件区分开。例如，“第一区”可以如此命名以仅使其与例如“第二区”区分开。只是在术语“区”之前使用序数“第一”和“第二”并不表示两个区之间的任何其他关系，并且同样也不表示任一或两个区的任何其他特性。
在使用本申请中描述的“包括”、“具有”、和“包含”的情况下，除非使用了明确的限定用语，例如“仅”、“由……组成”等，否则还可以添加另一部件。除非相反地提及，否则单数形式的术语可以包括复数形式，并不能理解为其数量仅为一个。
如前所述，目前通常通过设置防回流装置来降低失效的风扇停止运行后对整个散热系统的影响。
一种已知的方法是，在风扇的后侧设置多个沿竖直方向排列的防回流挡片，防回流挡片的上端与风扇盒相铰接。在风扇不运行时，相邻两个防回流挡片中，位于上方的防回流挡片的下端自然搭接在位于下方的防回流挡片的上端。这种竖直方向排列的防回流挡片，通过转动轴转动连接在相对设置的安装框内。无气流通过时，防回流挡片在重力作用下自然下垂。当风扇正常工作时，正向气流推动防回流挡片转动，气流得以通过。当风扇故障时，反向气流作用于下垂的防回流挡片。由于防回流挡片无法在下垂状态下反向转动，因此，反向气流无法通过，防回流挡片阻止了气流回流。然而，由于风扇在运行状态下，防回流挡片的上下风速不一致，因此防回流挡片上下的压力不一致。因此，这种采用重力机制的防回流挡片，将会一直处于摆动的运动状态，产生很大的噪声和异响，严重影响用户体验。
本申请实施例提供一种风扇框结构。请参照图1和图5所示，为本申请一实施例提供的风扇框结构的爆炸结构图。
在本实施例中，风扇框结构可以包括第一框架1、第二框架2和防回流片框架3。第一框架1中设置有若干个风扇安装空位，若干个风扇可转动地安装于第一框架1上的风扇安装空位上。
防回流片框架3分别与风扇对应设置。防回流片框架3可以可拆卸地安装于第一框架1上。
防回流片框架3活动连接有若干个防回流挡片31。每个防回流挡片31包括转动轴和挡片部，且均能够相对于转动轴枢转。
在一实施例中，当风扇运行时，其对应的防回流挡片31围绕转动轴向内 枢转(打开)用于进风。防回流挡片31打开时具有第一极限位置，在该位置上时，防回流挡片31具有打开的最大角度。当风扇停运(或发生故障)时，其对应的防回流挡片31向外枢转(关闭)用于封闭气流。防回流挡片31关闭时具有第二极限位置，在该位置上时，防回流挡片31密闭以防止气流进入第一框架1。
继续参照图1和图5，防回流框架3的左右两个边框在防回流框架3的远离风扇的一侧上分别设有理线槽33。理线槽33用于容纳电源线以避免电源线阻碍防回流挡片31的进风，以及电源线可能被卷入风扇框结构内部的风险。
在本实施例中，第二框架2可以可拆卸地安装于第一框架1上。第二框架2可以覆盖防回流片框架3上的部分区域(例如理线槽33的区域)，只要不影响防回流片框架3的进风即可。第二框架2在覆盖理线槽33对应的区域时，可以防止理线槽33内的电源线的灰尘侵入，并且可以保护电源线。
可以理解的是，防回流片框架3与第一框架1之间，以及第二框架2与第一框架1之间可相互独立地采用可拆卸螺纹连接，也可以采用其他的方式进行可拆卸连接，如采用卡合连接、滑道连接等不同的方式，在此不进行限制。
请参照图2和图6所示，图2和图6为本申请实施例提供的防回流片框架3的结构图。
在本实施例中，防回流挡片31呈左右排列的方式安装于防回流片框架3中。可以理解的是，这里的左右排列方式，是指防回流挡片31延大致竖直的方向延伸，且多个防回流挡片31延大致横向间隔排布，如图2和图6所示。
防回流片框架3的上下两侧的边框上可以分别设置一排转动槽(图2和图6中未示出)，每排转动槽中包括若干个转动槽。上下两侧边框上的转动槽相对应设置。每对对应的转动槽可以活动连接有一个防回流挡片31。具体地，防回流挡片31可以包括转动轴311和挡片部312，转动轴311的两端分别可转动地安装于一对对应设置的转动槽内。当转动轴311枢转时，会带动与之相连的挡片部312进行转动。当防回流挡片31对应的风扇正常运转时，防回 流挡片31打开(向内枢转)用于进风。当防回流挡片31对应的风扇失效时，防回流挡片31关闭(向外枢转至第二极限位置)以阻止进风。
防回流片框架3上还可设置有止位件32。每个防回流挡片31可以对应一个止位件32，也可以对应设置多个止位件32。
止位件32用于限制转动轴311的最大旋转角度，进而限制防回流挡片31的挡片部312的旋转位置(第一极限位置)。本申请中，最大旋转角度的范围小于90度。最大旋转角度的范围可以为80度至88度之间，或可以为87度。
这里，最大旋转角度是指挡片部312在旋转至第一极限位置时，挡片部312延伸的平面与防回流片框架3延伸的平面之间的夹角。通过设置最大旋转角度小于90度，使得防回流挡片31在打开至第一极限位置时，不会完全垂直于风扇。因为在不垂直于风扇时，防回流挡片31的挡片部312的左右两侧将会产生压力差，从而避免当风扇停止运转时，防回流挡片31无法闭合，保证防回流挡片31的防回流功能。
需要指出的是，最大旋转角度的范围设置在80至88度之间时，可以实现在保证防回流挡片31的进风效果的同时，保证风扇停运时防回流挡片31能够及时、正确地关闭，从而保证散热效果的稳定性。
在图2和图6所示的实施例中，止位件32采用凸起的形式。通过设置凸起的方式进行限位，其结构简单，且在防回流挡片31旋转过程中，不会增加防回流挡片31旋转的摩擦阻力，可以延长防回流挡片31的使用寿命。
在一实施例中，当防回流挡片31处于打开状态时，转动轴311的最大旋转角度可接近90度，可以最大程度地进风，减小设置防回流挡片31对散热性能的影响。在图2和图6中，作为止位件32的凸起可以设置在防回流片框架3的下侧边框上。在其他实施例中，凸起也可以对应地设置于防回流片框架3的上侧框架上，或者还可以在上下两侧边框上均设置相应的凸起，以实现防回流挡片31旋转被限位时，上下受力均匀，从而保证限位效果，以及减少因防回流挡片31受力不均匀而导致的变形。在本申请中并不限定作为止位件32的凸起的位置和个数。
采用本申请中提供的左右排布的防回流挡片，具有如下优点。(1)左右排布的防回流挡片相比于上下排布的防回流挡片，由于自身重力对其影响较小，在使用过程中不会出现异响。(2)本申请中提供的左右排布的防回流挡片，采用作为止位件的凸起进行限位，而不需要采用固定的旋转轨道，因此，设计更加简单，且不增加旋转时的摩擦阻力，延长防回流挡片的使用寿命。
可选地，止位件可采用滑动件和滑动槽的配合来实现。
具体地，止位件可以包括设于挡片部上的滑动件，及设于止位件对应的边框上的滑动槽，其中，滑动件伸入对应的滑动槽中，并且挡片部枢转时，滑动件沿滑动槽的方向移动。滑动槽的一端限定防回流挡片打开时的极限位置，即限定防回流挡片的第一极限位置，滑动槽的另一端限定防回流挡片关闭时的极限位置，即，限定防回流挡片的第二极限位置，从而实现滑动件和滑动槽的配合限定所述挡片部的枢转。
请继续参照图2和图6所示，防回流片框架3在宽度方向上(垂直于竖直方向和横向方向的方向)的宽度为d。防回流片框架3设置为，使得当防回流挡片31处于打开状态(位于第一极限位置上)时，防回流挡片31在防回流片框架3上的宽度方向上的投影的宽度为d0，其中d0<d。因为d0<d，即在防回流挡片31位于第一极限位置上时，风扇与防回流挡片31的挡片部312的朝向风扇的一端之间将存在一定的间距。此时，在风扇框结构内部将会形成混流腔，该混流腔体能增加风扇进风口面积，提升风扇的散热效果。换言之，当风扇正常运行时，该混流腔能增加风扇进风口面积，提升风扇的散热效果；当风扇不能正常运行时，因为该风扇框结构设置有防回流挡片31，该失效风扇并不影响其他风扇的正常运行，从而提高了散热系统的稳定性。尤其地，针对防回流片框架3与风扇一一对应设置时，将会降低单个风扇失效对其他正常运行风扇的影响。
本申请中提供的防回流挡片31的工作原理如下：当风扇正常工作时，防回流挡片31靠近风扇端一侧的风速大，气压小。在该压差的作用下，防回流挡片31通过转动轴311开始枢转，直到达到止位件32所限定的第一极限位 置处停止。此时，由于防回流挡片31的延伸平面与风扇进风的方向几乎平行，因此防回流挡片31并不影响风扇的正常运行。此外，由于本申请中的在第一极限位置上的防回流挡片31的挡片部312的朝向风扇的一端与风扇之间存在一定的间距，在防回流挡片31与风扇之间形成混流腔，进一步增加了风扇的进风面积。由于当某一个风扇失效时，此时因为该风扇不再转动，因此，与之对应设置的防回流挡片31靠近风扇端一侧的风速小、气压大。在该压差的作用下，防回流挡片31通过转动轴311枢转，直到抵接于相邻防回流挡片31的转动轴311上(第二极限位置)形成闭合。此时，风扇的进风方向与防回流挡片31的延伸平面的延伸方向垂直，使得防回流挡片31将对应的风扇口密封起来，防止了其他正常风扇的气流不经过通信部件上高发热的器件而直接从失效风扇处流出的情况。因此，通过设置本申请的防回流挡片31，可以在风扇失效的情况下也能优化系统的散热能力。
由于风扇组件由机箱中的电源模块通过主板供电，因此，风扇组件上的电源线比较长，难以整理，而且电源线可能会挡住进风口，影响风扇散热。除此之外，风扇的电源线还可能被缠绕进风扇内，影响风扇运行的安全。
请继续参照图2和图6所示，本申请实施例的防回流片框架3还包括理线槽33。
本实施例中，在防回流片框架3的左右两侧分别设置理线槽33，用于整理风扇的电源线。因为防回流片框架3设置于风扇的进风侧的前端，通过前置的理线架进行走线，则避免了风扇的电源线挡住风扇的进风口，提高风扇的散热效率；同时也避免风扇电源线被缠绕进风扇内部，提高风扇运行的安全性。
在本实施例中，理线槽33设置在防回流片框架3的左右两侧的框架的远离对应风扇的一侧。在其他实施例中，理线槽33也可以设置在防回流片框架3的上侧边框、下侧边框、左侧边框、或者右侧边框中的至少一者上，本申请中并不限制理线槽33的位置和个数。
通过设置理线槽33可以有效利用防回流挡片31的边框的槽位空间和混 流腔34形成的内部空间，解决风扇电源线理线难的问题，同时使得电源线不会影响混流腔34的气流，保证了混流腔34的散热性能。
在本实施例中，理线槽33的远离风扇的侧面与防回流片框架3的远离风扇的侧面大致齐平。
通过设置理线槽33的远离风扇的侧面与防回流片框架3的远离风扇的侧面大致齐平，实现解决理线问题的同时，不影响防回流片框架3的侧面平整，便于第二框架2的安装。
在本申请一实施例中，每个防回流片框架3的连接空白处，也可以设置理线槽(图中未示出)，以进一步提高风扇框结构的空间利用率，提高理线能力。每个防回流片框架3的连接空白处指相邻防回流片框架3之间的空隙区。具体的，可以利用竖直方向相邻的防回流片框架3的相邻边框实现横向的理线槽结构，从而进一步提高风扇框结构的空间利用率，提高理线能力。
继续参照图2和图6，第二框架2可以可拆卸地安装于第一框架1上，第二框架2用于覆盖理线槽的区域，用于将风扇电源线隐藏，使得本申请中的风扇框结构更加美观和整洁。
请参照图3和图7所示，图3和图7为本申请中风扇框的俯视图。从图3和图7的俯视图中，可以看到防回流挡片31的具体结构，防回流挡片31包括转动轴311和挡片部312，止位件32包括凸起，该凸起用于限制防回流挡片31的第一极限位置。当挡片部312运动到该位置时，转动轴311将不能继续旋转。因为防回流片框架3在宽度方向上的投影的宽度大于防回流挡片31运动到最大位置时在宽度方向上投影的宽度，因此，在风扇框结构中将形成混流腔34，混流腔34将进一步增加风扇运行时的进风面积，提升风扇的散热效率。
在另一个实施例中，如图4所示，防回流片框架3设置在需要散热的通信部件(例如交换网板)和第一框架1的风扇之间，其中，防回流片框架3和通信设备之间形成有混流腔35，防回流片框架3和相应的风扇之间形成有混流腔34，从而提高了整体的混流腔体积，提高了风扇的散热效率。
在本实施例中，防回流片框架3在朝向风扇的侧面上设有凸缘36，凸缘36、风扇和防回流挡片31靠近风扇的一端限定所述混流腔34。
在本实施例中，通过设置的凸缘36，使得凸缘36、风扇和防回流挡片31靠近风扇的一端限定混流腔34，该混流腔34具有更大空间，进一步增加风扇进风口面积，提升风扇的散热效果。
额外地，如图所示，可以利用理线槽33的结构所形成的向内凹陷结构作为凸缘，使得该防回流风风扇框的结构不仅具有理线功能，还增加了混流腔34的空间，即，进一步增加了风扇进风口面积，提升了风扇的散热效果。
请继续参照图4，图4为本申请中的风扇框结构用于通信设备(例如，交换机)时，通信设备的俯视图。本申请并不限定该风扇框结构的应用场合，其可以用于任何需要散热的电子设备中。图4仅以交换机为例进行说明。
该交换机包括业务线卡和交换网板。在应用时，本实施例的风扇框结构中的防回流片框架3正对网板，即防回流片框架3正对通信部件，并靠近通信部件。第一框架1及安装于其中的风扇在防回流片框架3的后端，并远离通信部件。通过将防回流片框架3设置于风扇的进风口处，利用了风扇框结构的内部空间，缩短整个设备的长度尺寸，使得设备会更加美观。
在一实施例中，防回流片框架3可以与通信部件之间留有一定的距离，用于形成系统混流腔35。
当风扇正常工作过程时，防回流挡片31靠近风扇的一侧的风速大，气压小。在形成的压差的作用下，防回流挡片31通过转动轴枢转，直到达到止位件所限定的的止位位置(第一极限位置)处停止，如图4中所示，此时，防回流挡片31的延伸平面的延伸方向与风扇进风的方向几乎平行，使得防回流挡片31并不影响风扇的正常运行。风扇框结构内部形成的混流腔34能进一步增加进风面积，提升风扇的散热效率。当某一个风扇失效时，因为该风扇不再转动，因此，与之对应设置的防回流挡片31靠近风扇一侧的风速小、气压大。在形成的压差的作用下，防回流挡片31枢转以抵接至相邻防回流挡片31的转动轴311上止位，如图4中所示。此时，防回流挡片31将对应的风扇 进风口密封起来，防止了其他正常风扇的风流不经过通信部件上高发热的器件而直接从失效风扇处流出的情况。
额外地或可选地，多个防回流片框架3的数量可以小于或等于所述多个风扇安装空位的数量，且所述多个防回流片框架3分别设置于所述第一框架1上的对应于所述多个风扇的位置上。
在一实施例中，当风扇被拔出后，即，存在未安装风扇的风扇安装空位时，仅在安装风扇的风扇安装空位上安装防回流片框架3，而在无风扇的风扇安装空位处直接设置例如挡板。换言之，在该实施例中，防回流片框架3的数量小于所述多个风扇安装空位的数量。
在另一实施例中，每个风扇安装空位上均安装有风扇。此时，防回流片框架3的数量等于多个风扇安装空位的数量。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (19)

  1. 一种风扇框结构，包括：
    第一框架，所述第一框架设有适于容纳风扇的风扇安装空位；和
    防回流片框架，所述防回流片框架设置于所述第一框架上的对应于所述风扇的位置；
    其中，所述防回流片框架包括可转动地设置在所述防回流片框架上的防回流挡片，所述防回流挡片包括：
    转动轴，所述转动轴沿大致竖直方向延伸；以及
    挡片部，所述挡片部可围绕所述转动轴枢转，且所述防回流挡片打开时具有第一极限位置，其中，所述防回流挡片在所述第一极限位置上时，所述挡片部所在的延伸平面与所述防回流片框架所在的延伸平面的夹角的范围为小于90度；及所述防回流挡片在关闭时还具有第二极限位置，且所述防回流挡片在所述第二极限位置时，所述防回流挡片密封闭合。
  2. 根据权利要求1所述的风扇结构，其中，所述挡片部所在的延伸平面与所述防回流片框架所在的延伸平面的所述夹角的范围为80度至88度之间。
  3. 根据权利要求1所述的风扇框结构，其中，所述防回流片框架的至少一个边框的远离所述风扇的侧面上设有第一理线槽。
  4. 根据权利要求3所述的风扇框结构，其中，所述第一理线槽的远离所述风扇的侧面与所述防回流片框架的远离所述风扇的侧面大致齐平。
  5. 根据权利要求3所述的风扇框结构，其中，所述风扇框结构还包括第二框架，所述第二框架可拆卸地安装于所述第一框架上，以覆盖所述第一理线槽。
  6. 根据权利要求1所述的风扇框结构，其中，所述防回流片框架上下边框中的至少一者上设置有止位件，所述止位件配置为限定所述第一极限位置。
  7. 根据权利要求6所述的风扇框结构，其中，所述止位件包括凸起，所述 凸起设于所述止位件对应的边框的朝向所述防回流片框架的一侧上。
  8. 根据权利要求6所述的风扇框结构，其中，所述止位件包括设于所述挡片部上的滑动件，及设于所述止位件对应的边框上的滑动槽，其中，所述滑动件和所述滑动槽的配合限定所述挡片部的枢转。
  9. 根据权利要求1至8中任一所述的风扇框结构，其中，所述防回流片框架包括多个防回流挡片，且所述多个防回流挡片的转动轴分别以间隔距离设置，其中，所述多个防回流挡片的宽度略大于所述转动轴之间的所述间隔距离。
  10. 根据权利要求1所述的风扇框结构，其中，当所述挡片部位于所述第一极限位置时，所述挡片部的靠近所述风扇的一端与所述风扇之间具有间隔距离以形成混流腔。
  11. 根据权利要求10所述的风扇框结构，其中，所述防回流片框架在朝向所述风扇的侧面上设有凸缘，所述凸缘、所述风扇和所述防回流挡片靠近所述风扇的一端限定所述混流腔。
  12. 根据权利要求1所述的风扇框结构，其中，所述防回流片框架的所述上下边框分别设置有彼此对准的转动槽，所述防回流片框架的所述转动轴的两端分别可转动地连接于所述转动槽。
  13. 根据权利要求1至12中任一项所述的风扇框结构，其中，所述第一框架包括适于容纳多个风扇的多个风扇安装空位，及所述风扇框结构包括多个防回流片框架，其中，所述多个防回流片框架的数量小于或等于所述多个风扇安装空位的数量，且所述多个防回流片框架分别设置于所述第一框架上的对应于所述多个风扇的位置上。
  14. 根据权利要求13所述的风扇框结构，其中，所述多个风扇安装空位延所述竖直方向依次布置，且所述多个防回流片框架也分别对应于所述多个风扇安装空位延所述竖直方向布置。
  15. 根据权利要求13所述的风扇框结构，其中，所述多个防回流片框架中相邻两个防回流片框架的相邻边框形成第二理线槽。
  16. 根据权利要求1所述的风扇框结构，其中，所述防回流片框架可拆卸地设置于所述第一框架上。
  17. 根据权利要求1至16中任一项中所述的风扇框结构，其中，所述风扇框结构中的所述防回流框架设置于所述第一框架和通信部件之间。
  18. 一种交换机，包括根据权利要求1至17中任一项所述的风扇框结构。
  19. 一种通信设备，包括根据权利要求1至17中任一项所述的风扇框结构。
PCT/CN2023/102501 2022-07-19 2023-06-26 风扇框结构、交换机及通信设备 WO2024016950A1 (zh)

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CN202251015U (zh) * 2011-07-21 2012-05-30 纬创资通股份有限公司 翼型叶片及风扇装置
CN102968164A (zh) * 2011-09-01 2013-03-13 鸿富锦精密工业（深圳）有限公司 具有防回流功能的散热系统
CN210829860U (zh) * 2019-10-14 2020-06-23 中兴通讯股份有限公司 一种用于防回流的叶片、防回流装置及电子设备
CN215683104U (zh) * 2021-09-23 2022-01-28 北京同方信息安全技术股份有限公司 一种防回流装置和服务器

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2886153Y (zh) * 2005-12-27 2007-04-04 台达电子工业股份有限公司 扇框及其理线构件
US20080310103A1 (en) * 2007-06-04 2008-12-18 Della Fiora Troy A Air backflow prevention in an enclosure
CN202251015U (zh) * 2011-07-21 2012-05-30 纬创资通股份有限公司 翼型叶片及风扇装置
CN102968164A (zh) * 2011-09-01 2013-03-13 鸿富锦精密工业（深圳）有限公司 具有防回流功能的散热系统
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